diff --git a/cocos/ui/UISlider.cpp b/cocos/ui/UISlider.cpp
index d152a3acca..b393fa7102 100644
--- a/cocos/ui/UISlider.cpp
+++ b/cocos/ui/UISlider.cpp
@@ -121,6 +121,7 @@ void Slider::initRenderer()
     _slidBallRenderer->addChild(_slidBallDisabledRenderer);
     _slidBallRenderer->setCascadeColorEnabled(true);
     _slidBallRenderer->setCascadeOpacityEnabled(true);
+    
     addProtectedChild(_slidBallRenderer, SLIDBALL_RENDERER_Z, -1);
 }